Final instalment of the Vaulted Villa saga (I hope!) 
The files too big though (2.26Mb), so I've had to post it in Google's 3D Warehouse, ( http://sketchup.google.com/3dwarehouse/search?q=vaulted+villa&btnG=Search&styp=m&reps=1 )
I finally finished the staircase, including slide-out storage, bookcase and display cabinet, added handrails and installed by scaling to the height of the mezzanine floor (is this the right method?).
I've labeled each living area, although fitting a kitchen and adding furnishings would be too big a job, at the moment, I think. I'll install a spiral staircase in the master bed for private access to the roof terrace,(the wife loves sleeping under the stars!) at a later date or when I find an adequately ornate sample to import. The same goes for floor level doors and windows (gotta include shutters or bars for security! 
).
The more observant will notice the roof-lights with circular windows. If you google "indalo man" you'll see the reference tips a hat at Andalucian culture whilst keeping the overall design light and contemporary (I hope again!).
I feel proud of this first "proper" attempt at design, but will welcome any profesional critique, as I need to know I'm on the right track, as it were. If all is well on a basic design level, maybe a more detailed and thorough project will be attempted, including plumbing, wiring, footings and bespoke items such as window framing for the roof-lights.
Hey! This could become an obsession! 
